Yin Jia-Yue, Zhang Zhong-Ti, Ai Hong-Jun, Si Wen-Jie, Bao Yang
Dept. of Prosthodontics, School of Stomatology, China Medical University, Shenyang 110002, China.
Hua Xi Kou Qiang Yi Xue Za Zhi. 2009 Dec;27(6):669-72.
To investigate the bonding properties and interface characterization of a domestic 3mol yttrium-stabilized tetragonal zirconium polycrystal (3Y-TZP) framework fired on with 4 different veneering ceramics for zirconia.
4 different commercial veneering ceramics for zirconia (VITA VM9, SHOFU VINTAGE ZR, IPS e.max Ceram, Cercon ceram kiss) were sintered on 3Y-TZP rectangulars (15 mmx5 mmx5 mm) according to the manufacturers' instructions for shear bond strength test, a metal-ceramic system(Ni-Cr alloy/VITA VMK95) was fabricated in the same type as a control group. Two bilayered specimens (3Y-TZP/VITA VM9, Ni-Cr/VMK95) were prepared for scanning electron microscope (SEM) and energy distribution spectrum (EDS).
The values of shear bond strength test were (18.83 +/- 1.77) MPa for 3Y-TZP/VITA VM9, (23.83 +/- 7.05) MPa for 3Y-TZP/SHOFU VINTAGE ZR, (17.87 +/- 2.30) MPa for 3Y-TZP/IPS e.max Ceram, (22.26 +/- 7.45) MPa for 3Y-TZP/Cercon ceram kiss, (20.55 +/- 5.13) MPa for Ni-Cr alloy/VITA VMK95. There was no statistically significant between all-ceramic groups and the control group (P > 0.05). The failure modes in all-ceramic groups showed predominately adhesive at the interface. SEM showed the 3Y-TZP/VITA VM9 contacted tightly at the interface, while EDS detected Si element diffused into 3Y-TZP material.
The results indicate that domestic 3Y-TZP has a good interface compatibility with 4 commercial veneering ceramics, as a dental framework material, it can satisfy the clinical requirements.
研究国产3mol钇稳定四方多晶氧化锆（3Y-TZP）基台与4种不同的氧化锆饰面陶瓷的结合性能及界面特征。
按照制造商的说明，将4种不同的商用氧化锆饰面陶瓷（VITA VM9、松风VINTAGE ZR、IPS e.max Ceram、Cercon ceram kiss）烧结在3Y-TZP长方体（15 mm×5 mm×5 mm）上，用于剪切粘结强度测试，同时制作相同类型的金属陶瓷系统（镍铬合金/VITA VMK95）作为对照组。制备两个双层试样（3Y-TZP/VITA VM9、镍铬合金/VMK95）用于扫描电子显微镜（SEM）和能谱分析（EDS）。
3Y-TZP/VITA VM9的剪切粘结强度测试值为（18.83±1.77）MPa，3Y-TZP/松风VINTAGE ZR为（23.83±7.05）MPa，3Y-TZP/IPS e.max Ceram为（17.87±2.30）MPa，3Y-TZP/Cercon ceram kiss为（2二十二点二六±7.45）MPa，镍铬合金/VITA VMK95为（20.55±5.13）MPa。全陶瓷组与对照组之间无统计学差异（P>0.05）。全陶瓷组的失效模式主要表现为界面处的粘结。SEM显示3Y-TZP/VITA VM9在界面处紧密接触，而EDS检测到硅元素扩散到3Y-TZP材料中。
结果表明，国产3Y-TZP与4种商用饰面陶瓷具有良好的界面相容性，作为牙科基台材料，可满足临床要求。
